D nhaz

c

1.The post office is behind of my house

2.Don't forget to do exercise before going to school

3.Both Hoang and his brother aren't fat

4.Learning English isn't easy

5. Nam is the shortest person in my class

6. Hang's friend isn't as intelligent as Hang

1.hard

2.slowly

3.angry

4.quiet

5.common

6.bravely

7.bright

8.stressful

9.fast

10.generous

1.My/ her/ she

2.His

3.They/ their

4.It

5.We

6.They

1. His

2.It

3.Her

4.Them

1. sat

2.to write

3.will be built

4. will help

5. haven't been seeing

6. take

tam giác abc có ab=6, ac=8, bc=10. đg cao ah của tam giác abc, p.g ad của tam giác ahc, p.g ae của tam giác abh c/m:

1. tam giác abc vuông

2. tam giác abd cân tại B